Another store of violate trust. When you put your kids on the school bus you do not expect this to happen. Bullying by a grown-up. The alleged victim here an especially vulnerable 5-year-old. Abc's ty hernandez is on the good morning. Reporter: Good morning, bianna and dan. The video is so hard to watch, it appears to be tak right on the bus, a place where kids are supposed to be cared for. Stop kicking my seat and get up. Reporter: It's supposed to be a safe haven but for one student this school bus was anything but. What is your problem? Cut it out. Cut it out! orter: NEWLY RELEASED Surveillance video shows 37-YEAR-OLD donetta MacPherson, a school bus aide in port st. Lucie, florida, repeatedly berating a 5-year-old boy who has disabilities. Say, yes, ma'am. Reporter: Macpherson accused of yelling at the boy on several occasions even threatening to take him home with her and often bringing him to tears. What did I tell you? Huh? What did I tell you? Put that down now. Okay. Cry. Boo-hoo. Reporter: It came do a sudden stop after a school employee reported the alleged abuse to police. You going home with me today. No. Yes, you are. Reporter: After nearly a 4-month investigation she was arrested thursday and charged with stalking, according to the ce report, there was at least one incident in which MacPHERSON GRABBED THE BOY Causing him to hit his head on the side of the bus. Abc news reached 0 out to her for comment but got no word back. The boy's family isn't speaking either. But police are. Innocent victim. It's a violation of public trust as far as I'm concerned. Reporter: This morning we know she was released from jail on $20,000 bond and 130ek to the director of communications for the school board. SHE says MacPherson is still with the st. Lucy schools in a role away from students, though. Her status with the school is pending the legal process, dan, bianna. I hope she stays away from children. Ty, thank you. Thanks, ty.

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